CVE-2026-53010
CSIRTS triage
- What
- A use-after-free vulnerability in smb2_open during durable reconnect in ksmbd.
- Who is affected
- Deployments of ksmbd that utilize smb2_open.
- Urgency
- Remediation is critical due to the severity rating of 9.8 and potential for privilege escalation.
- Action
- Patch ksmbd to fix the use-after-free vulnerability.
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Exploitation outlook
- Low exploitation risk0.43% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 35% of all EPSS-scored CVEs.
Advisory coverage (1)
- criticalCVE-2026-53010: ksmbd: fix use-after-free in smb2_open during durable reconnectmsrc · 2026-06-09
External references
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[](https://www.csirts.com/cve/CVE-2026-53010)